Insulating body of spun glass



July 22, 1930. Q GOSSLER 1,771,216

INSULATING BODY OF SPUN GLASS Filed Dec. 9, 1926 05C; we: Goss E5PmmdJulyzzln UNITED STATES PATENT loFi-icE 0.0 60mn, 0l' mm, 6mm

mmm!! BODY l' BPUILGLABS Application lied December 9, im, lerici No.158,080, and in yGermany October I., im.

This invention is directed to the production of insulating bodiesconstructed of spun glass, wherein the glass threads are arranged par- Iallel to one another andv transversely to the 6 flow of heat. K

The primary object of the present invention is the provision of aninsulating body or the like in which the spun glass is arranged insuperimposed layers, wit the threads in Y 10 any one la er arallel toone another and the threads o di erent layers crossing one another at anangle.

i The invention is illustrated in the accompanying drawings, in whichFigure 1 is a sectional view showing a plurality of superimposed layersof spun glass in making up the desired article.

Figure 2 is a plan indicating the parallel relation of the respectivethreads of any one layer and the angular relation ofthe threads of onelayenwith respect to the threads of an adjacent layer.

Fi ure 3 is a transverse sectional view` showing the insulating bodyencircling a pipe to be insulated.

Figure 4 is an ed e view of the composite insulatin body in icatingparticularly the relative s apin of t-he respective layers of spun glassin te winding of the insulating body around the pipe.

Figure 5 is a simi ar view showingthe addition of a la er of any othermaterial as an extension ofY the insuatin body.

The insulating body o this invention is 85 made up of an appropriate anddesired number of layers of spun glass, the separate layers beingindicated, for example, at a, b, c, d, e, f and g in Fi re 1 of thedrawings. The arran ement o the respective layers of the spun g ass isindicated more particularly in Figure 2. From this figure it will benoted that the respective layers are made up of glass threadswhich inthe particular layer are arranged substantially parallel one to theother. The next superimposed layer, in-

dicated for example at `b in Figure 2, which superimposed layer is alsomade up ofA spun glass with the threads arranged in relatively arallelrelation, is then superimposed on ayer a arranged at an angle thereto,that is the threads of layer b will be at an an le to the threads oflayer a. In Figure 2, the ayer b is shown with its threads disposed atright angles to the threads of layer a. The next superimposed layer,also composed of spun glass with the threads arranged in relativelyparallel relation, will be arranged. with its threads at an angle to thethreads of both layers a and b, that is, as indicated in Figure 2, layercis shown with its threads crossing the threads of both layers a and band at an angle to each. This arrangement of the respective layers ma becarried out throu hout the full desired tickness of the insulating Acharacteristic feature of the invention exists in the fact that therespective layers are wholly free of connection one with the other andthat each layer is capable of a longitudinal shifting independently ofany other layer. layers have been arranged in the described relation,the res ective upper and lower surfaces of the bo y, that is of theplurality of layers, is impregnated on one or both surfaces. Theimpregnatin means may be, 'for example, water glass, rub means in whichthe requirement of presenting an adhesive influence while avoidingrigidity after adhesion is the pertinent feature. That is to say, themeans employed for iinpregnating the surfaces of the body must ave thedesired adhesive eiect but must prevent the glass threads of therespective outer and inner layers from becoming brittle. In other words,the impregnating means must maintain the desired elasticity required topermit complete lack of brittleness in the glass threadsl forming theimpregnated layers.

As a result of the impregnation, the lower surface of the body presentsa more or less plane or flat surface, thus permitting the andling of thebody as an entirety in a manner similar to the handling of a band orsection of textile fabric or the like..

If the insulating body be wound about a pipe, as indicated at h inFigure 3, the re- Spective layersV making up the body are 1ongitudinallyshifted so that there is presented er solution or other When 'thedesiredynumber of a. thickness made u of glass threads which issubstantially uniorm about the pipe. If desired, the insulating body,when wound about the ipe, may be protected by an outer layer as, orexample, of fabric, wire gauze v or other material which forms no partof the present invention and is not re uired to be illustrated. Incidentto the shi ting of the several layers of the bodiyl' during the windingof the same about t e pipe, a more or less secure hold is given to theinsulating material notwithstanding the relative plane between thelayers, thus preventing the body as a whole from turning around thepipe.

The manner in which the layers relatively shift during the windingoperation is indicated clearly in Figure 4 of the drawings. If desired,a fabric section or other protective element, indicated at Z in Figure5, may be seured to the side edge of the inner layer of the body, thesecuring means being, if preferred, the means used for impregnating thelower layer of the body. K

In thus providing an insulating body in which the layers are relativelymovable, with each layer made up of parallel threads of spun glass, withthe threads of one layer at an angle to the threads of the other, theknown inconveniences and `objections to bodies of this type wherein thelayers of glass threads are connected by bands or strips or united bysewing are entirely avoided. Where the threads making up the body areconnected against relative shifting, the uniform application of thelayer in more or less concentric relation on the body being insulatedis, of course, impossible.

I claim:

i. An insulating body made up of a pluralityof superimposed layers, eachlayer including threads of spun glass disposed in substantiallyparallelism, the threads of one layer being disposed at an angle to thethreads of the adjacent layer, the respective layers having relativefreedom of movement.

2. An insulating body made up of a plurality of superimposed layers,each layer including threads of spun glass dis osed'in substantiallyparallelism, the threa s of one layer being disposed at an angle to thethreads of the adjacent la ers, the respective layers having relativereedom of movement, the surface of the body being impregnated with anadhesive which remains elastic after drying.

In testimony whereof I afiix m si ature.

OSCAR G SS ER.

